Agricultural tractor



FIG. 1 is a right side view of an agricultural tractor showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a Top Plan View thereof;

FIG. 6 is a Perspective View (1) thereof; and,

FIG. 7 is a Perspective View (2) thereof. 

The ornamental design for an agricultural tractor, as shown and described. 